IBA STS 25 years Past Papers 2001 to 2025

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IBA STS 25 years Past Papers 2001 to 2025

Q621: Choose the sentence with the correct use of preposition: I found my shoes under the bed., I found my shoes in the bed., I found my shoes on the bed., I found my shoes above the bed.

I found my shoes under the bed.

I found my shoes in the bed.

I found my shoes on the bed.

I found my shoes above the bed.

Explanation

I found my shoes under the bed.

"Under" shows something is beneath or lower than something else — here, beneath the bed.

It correctly indicates the position where shoes are typically found if they slide or are placed out of sight.

Q622: In an irregular reflection, the light rays reflect at _______?

ایک فاسد عکاسی میں ، ہلکی کرنیں _______ پر عکاسی کرتی ہیں؟

Always 90 degrees

Different angles

Some at the same angles, some at different angles

None of these

Explanation

In irregular (diffused) reflection, light rays hit a rough surface.

This causes them to reflect in different directions and angles.

Q623: The Antonym of Hovering is?

Sunk

Soaring

Floating

None of these

Explanation

Hovering means ایک جگہ پر معطل رہنا

Sunk means نیچے جانا یا نچلی سطح پر آباد ہونا

Q624: Select the correct spelling of a word for 'a place where patients are treated': Haspital, Hospitale, Hospital, None of these

Haspital

Hospitale

Hospital

None of these

Explanation

Hospital means ہسپتال

Q625: The Synonym of Selected is?

Restrained

Held

Appointed

None of these

Explanation

Selected means منتخب

Appointed means مقرر

Q626: The temperature of a hill mountainous area is -3°C. fte a few hours, it will drop down by 4°C?

-7

-1

None of these

Explanation

Current temperature is -3°C, and it drops by 4°C.

So, -3 - 4 = -7°C — the new temperature.

Q627: Choose the sentence with the correct use of a preposition: In Islamabad, it often snows at January., In Islamabad, it often snows in January., In Islamabad, it often snows on January., In Islamabad, it often snows of January.

In Islamabad, it often snows at January.

In Islamabad, it often snows in January.

In Islamabad, it often snows on January.

In Islamabad, it often snows of January.

Explanation

The preposition "in" is used for months, years, and long periods.

Therefore, "in January" is the correct usage.

Q628: All of the following are bad conductors of heat except?

مندرجہ ذیل میں سے سبھی گرمی کے برا کنڈکٹر ہیں سوائے اس کے کہ؟

Copper

Wood

Plastic

Glass

Explanation

Copper is a good conductor of heat.

That's why it’s used in cooking utensils and electrical wiring.

Wood, plastic, and glass are poor conductors (insulators), meaning they do not transfer heat easily.

Q629: The length of the window is thrice its width. Find the length of the window when its area is 18.75 sqm?

7.75

7.5

None of these

Explanation

Let's denote the width as w and the length as 3w (since the length is thrice the width).

The area of the window is:

w × 3w = 3w²

Given area = 18.75 sqm

3w² = 18.75

w² = 18.75 / 3

w² = 6.25

w = √6.25

w = 2.5

Length = 3w

= 3 × 2.5

= 7.5

Q630: The LCM of 3 and 4 is?

None of these

Explanation

The Least Common Multiple (LCM) of 3 and 4 is 12, the smallest number divisible by both.

Multiples of 3: 3, 6, 9, 12...

Multiples of 4: 4, 8, 12...

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